18896397 has 32 divisors (see below), whose sum is σ = 28331520. Its totient is φ = 11194560.

The previous prime is 18896389. The next prime is 18896399. The reversal of 18896397 is 79369881.

It is not a de Polignac number, because 18896397 - 2³ = 18896389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18896399) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 309747 + ... + 309807.

It is an arithmetic number, because the mean of its divisors is an integer number (885360).

Almost surely, 2^18896397 is an apocalyptic number.

It is an amenable number.

18896397 is a deficient number, since it is larger than the sum of its proper divisors (9435123).

18896397 is an equidigital number, since it uses as much as digits as its factorization.

18896397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 124 counting only the distinct ones).

The product of its digits is 653184, while the sum is 51.

The square root of 18896397 is about 4346.9986197375. The cubic root of 18896397 is about 266.3542728962.

The spelling of 18896397 in words is "eighteen million, eight hundred ninety-six thousand, three hundred ninety-seven".